GCD of 215, 628, 144, 690 Calculator

Given Input numbers are 215, 628, 144, 690

In the factoring method, we have to find the divisors of all numbers

Divisors of 215 :

The positive integer divisors of 215 that completely divides 215 are.

1, 5, 43, 215

Divisors of 628 :

The positive integer divisors of 628 that completely divides 628 are.

1, 2, 4, 157, 314, 628

Divisors of 144 :

The positive integer divisors of 144 that completely divides 144 are.

1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144

Divisors of 690 :

The positive integer divisors of 690 that completely divides 690 are.

1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690

GCD of numbers is the greatest common divisor

So, the GCD (215, 628, 144, 690) = 1.

Given numbers are 215, 628, 144, 690

The list of prime factors of all numbers are

Prime factors of 215 are 5 x 43

Prime factors of 628 are 2 x 2 x 157

Prime factors of 144 are 2 x 2 x 2 x 2 x 3 x 3

Prime factors of 690 are 2 x 3 x 5 x 23

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 215, 628, 144, 690

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(215, 628) = 135020

GCD(215, 628) = ( 215 x 628 ) / 135020

= 215 / 628

= 215

Step2:

LCM(1, 144) = 144

GCD(1, 144) = ( 1 x 144 ) / 144

= 1 / 144

= 1

Step3:

LCM(1, 690) = 690

GCD(1, 690) = ( 1 x 690 ) / 690

= 1 / 690

= 1

So, Greatest Common Divisor of 215, 628, 144, 690 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 487, 853, 398, 550
• GCD of 480, 691, 932, 845
• GCD of 973, 543, 911, 268
• GCD of 577, 825, 478, 229
• GCD of 462, 313, 283, 524

Given numbers are 215, 628, 144, 690
The greatest common divisor of numbers 215, 628, 144, 690 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 215, 628, 144, 690 is 1.

1. What is the GCD of 215, 628, 144, 690?

GCD of given numbers 215, 628, 144, 690 is 1

2. How to calculate the greatest common divisor of 215, 628, 144, 690?

We can find the highest common divisor of 215, 628, 144, 690 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 215, 628, 144, 690 i.e 1.

3. How can I use the GCD of 215, 628, 144, 690Calculator?

Out the numbers 215, 628, 144, 690 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.